Why Doesn't CSS Transition Affect Background Images, and How Can I Fix It?

CSS3 Background Image Transition Conundrum

When attempting to implement a "fade-in fade-out" effect using CSS transitions, one may encounter an issue with background images. While the CSS includes a transition for the background property, it fails to have any effect on the background image.

To resolve this issue, CSS explicitly transitions the background-image property. This modification ensures that both the background color and image smoothly transition between states, creating the desired effect.

To illustrate this solution, consider the following CSS code:

-webkit-transition: background-image 0.2s ease-in-out;
transition: background-image 0.2s ease-in-out;

By applying this CSS to the target element (e.g., an image), the background image will transition seamlessly between different states, resulting in a smooth and polished effect.

It's important to note that this solution is natively supported by Chrome, Opera, and Safari browsers. Firefox has yet to implement this feature, and the status for Internet Explorer remains unclear.

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